./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:16:40,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:16:40,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:16:40,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:16:40,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:16:40,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:16:40,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:16:40,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:16:40,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:16:40,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:16:40,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:16:40,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:16:40,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:16:40,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:16:40,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:16:40,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:16:40,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:16:40,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:16:40,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:16:40,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:16:40,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:16:40,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:16:40,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:16:40,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:16:40,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:16:40,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:16:40,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:16:40,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:16:40,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:16:40,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:16:40,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:16:40,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:16:40,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:16:40,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:16:40,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:16:40,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:16:40,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:16:40,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:16:40,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:16:40,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:16:40,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:16:40,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:16:40,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:16:40,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:16:40,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:16:40,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:16:40,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:16:40,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:16:40,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:16:40,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:16:40,854 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:16:40,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:16:40,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:16:40,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:16:40,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:16:40,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:16:40,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:16:40,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:16:40,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:16:40,857 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:16:40,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:16:40,857 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:16:40,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:16:40,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:16:40,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:16:40,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:16:40,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:40,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:16:40,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:16:40,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:16:40,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:16:40,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:16:40,860 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:16:40,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:16:40,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:16:40,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-16 12:16:41,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:16:41,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:16:41,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:16:41,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:16:41,312 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:16:41,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-16 12:16:41,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/data/170ca74a3/868a544ba7c049f09594dbc0f5165922/FLAGbf806a083 [2022-11-16 12:16:41,991 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:16:41,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-16 12:16:42,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/data/170ca74a3/868a544ba7c049f09594dbc0f5165922/FLAGbf806a083 [2022-11-16 12:16:42,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/data/170ca74a3/868a544ba7c049f09594dbc0f5165922 [2022-11-16 12:16:42,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:16:42,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:16:42,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:42,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:16:42,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:16:42,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:42" (1/1) ... [2022-11-16 12:16:42,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214bc081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:42, skipping insertion in model container [2022-11-16 12:16:42,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:16:42" (1/1) ... [2022-11-16 12:16:42,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:16:42,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:16:43,323 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-16 12:16:43,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:43,381 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:16:43,445 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-16 12:16:43,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:16:43,621 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:16:43,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43 WrapperNode [2022-11-16 12:16:43,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:16:43,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:43,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:16:43,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:16:43,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,697 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-11-16 12:16:43,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:16:43,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:16:43,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:16:43,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:16:43,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:16:43,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:16:43,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:16:43,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:16:43,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (1/1) ... [2022-11-16 12:16:43,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:16:43,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:43,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:16:43,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21faa57b-cfe7-4fbb-9d06-d1da2ddb3fc0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:16:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:16:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:16:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:16:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:16:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:16:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:16:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:16:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-16 12:16:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-16 12:16:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:16:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:16:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:16:43,913 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:16:44,265 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:16:44,267 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:16:44,598 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:16:44,607 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:16:44,607 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:16:44,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:44 BoogieIcfgContainer [2022-11-16 12:16:44,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:16:44,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:16:44,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:16:44,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:16:44,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:16:42" (1/3) ... [2022-11-16 12:16:44,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276b1f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:44, skipping insertion in model container [2022-11-16 12:16:44,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:16:43" (2/3) ... [2022-11-16 12:16:44,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276b1f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:44, skipping insertion in model container [2022-11-16 12:16:44,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:44" (3/3) ... [2022-11-16 12:16:44,620 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-16 12:16:44,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:16:44,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:16:44,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:16:44,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:16:44,735 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:16:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2022-11-16 12:16:44,872 INFO L130 PetriNetUnfolder]: 10/240 cut-off events. [2022-11-16 12:16:44,873 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:16:44,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-16 12:16:44,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 406 flow [2022-11-16 12:16:44,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 181 transitions, 374 flow [2022-11-16 12:16:44,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:44,903 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29cb7160, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:44,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 12:16:44,917 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-16 12:16:44,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:16:44,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:44,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:44,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1888391755, now seen corresponding path program 1 times [2022-11-16 12:16:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:44,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351840401] [2022-11-16 12:16:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:46,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351840401] [2022-11-16 12:16:46,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351840401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:46,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:46,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025245175] [2022-11-16 12:16:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:46,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:46,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-16 12:16:46,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 181 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:46,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:46,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-16 12:16:46,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:46,908 INFO L130 PetriNetUnfolder]: 361/1046 cut-off events. [2022-11-16 12:16:46,908 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 12:16:46,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1046 events. 361/1046 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6142 event pairs, 216 based on Foata normal form. 20/1013 useless extension candidates. Maximal degree in co-relation 1489. Up to 397 conditions per place. [2022-11-16 12:16:46,930 INFO L137 encePairwiseOnDemand]: 173/195 looper letters, 53 selfloop transitions, 17 changer transitions 1/177 dead transitions. [2022-11-16 12:16:46,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 177 transitions, 508 flow [2022-11-16 12:16:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:16:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2022-11-16 12:16:46,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6484330484330484 [2022-11-16 12:16:46,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2022-11-16 12:16:46,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2022-11-16 12:16:46,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:46,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2022-11-16 12:16:46,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:47,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:47,012 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 195.0) internal successors, (1950), 10 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:47,014 INFO L175 Difference]: Start difference. First operand has 181 places, 181 transitions, 374 flow. Second operand 9 states and 1138 transitions. [2022-11-16 12:16:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 177 transitions, 508 flow [2022-11-16 12:16:47,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:47,033 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 385 flow [2022-11-16 12:16:47,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2022-11-16 12:16:47,043 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2022-11-16 12:16:47,044 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 385 flow [2022-11-16 12:16:47,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:47,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:47,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:16:47,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -57843741, now seen corresponding path program 1 times [2022-11-16 12:16:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:47,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753298889] [2022-11-16 12:16:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:47,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:47,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753298889] [2022-11-16 12:16:47,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753298889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:47,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:47,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762091099] [2022-11-16 12:16:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:47,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 195 [2022-11-16 12:16:47,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:47,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:47,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 195 [2022-11-16 12:16:47,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:48,168 INFO L130 PetriNetUnfolder]: 361/1016 cut-off events. [2022-11-16 12:16:48,175 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:16:48,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 1016 events. 361/1016 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5868 event pairs, 120 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 882. Up to 262 conditions per place. [2022-11-16 12:16:48,186 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 61 selfloop transitions, 18 changer transitions 1/185 dead transitions. [2022-11-16 12:16:48,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 185 transitions, 577 flow [2022-11-16 12:16:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:16:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1261 transitions. [2022-11-16 12:16:48,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2022-11-16 12:16:48,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1261 transitions. [2022-11-16 12:16:48,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1261 transitions. [2022-11-16 12:16:48,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:48,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1261 transitions. [2022-11-16 12:16:48,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:48,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:48,204 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 195.0) internal successors, (2145), 11 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:48,204 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 385 flow. Second operand 10 states and 1261 transitions. [2022-11-16 12:16:48,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 185 transitions, 577 flow [2022-11-16 12:16:48,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 548 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:16:48,218 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 396 flow [2022-11-16 12:16:48,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=396, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2022-11-16 12:16:48,220 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -1 predicate places. [2022-11-16 12:16:48,220 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 396 flow [2022-11-16 12:16:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:48,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:48,222 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:16:48,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 5829728, now seen corresponding path program 1 times [2022-11-16 12:16:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:48,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055969067] [2022-11-16 12:16:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:48,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:48,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055969067] [2022-11-16 12:16:48,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055969067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:48,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:48,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870291304] [2022-11-16 12:16:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:48,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-16 12:16:48,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:48,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:48,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-16 12:16:48,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:49,668 INFO L130 PetriNetUnfolder]: 832/2093 cut-off events. [2022-11-16 12:16:49,669 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-11-16 12:16:49,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 2093 events. 832/2093 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14040 event pairs, 169 based on Foata normal form. 32/2097 useless extension candidates. Maximal degree in co-relation 1029. Up to 499 conditions per place. [2022-11-16 12:16:49,688 INFO L137 encePairwiseOnDemand]: 174/195 looper letters, 100 selfloop transitions, 49 changer transitions 0/254 dead transitions. [2022-11-16 12:16:49,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 254 transitions, 880 flow [2022-11-16 12:16:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:16:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:16:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1657 transitions. [2022-11-16 12:16:49,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6536489151873768 [2022-11-16 12:16:49,694 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1657 transitions. [2022-11-16 12:16:49,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1657 transitions. [2022-11-16 12:16:49,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:49,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1657 transitions. [2022-11-16 12:16:49,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 127.46153846153847) internal successors, (1657), 13 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:49,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:49,708 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:49,708 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 396 flow. Second operand 13 states and 1657 transitions. [2022-11-16 12:16:49,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 254 transitions, 880 flow [2022-11-16 12:16:49,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 254 transitions, 834 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 12:16:49,718 INFO L231 Difference]: Finished difference. Result has 192 places, 206 transitions, 666 flow [2022-11-16 12:16:49,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=666, PETRI_PLACES=192, PETRI_TRANSITIONS=206} [2022-11-16 12:16:49,719 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 11 predicate places. [2022-11-16 12:16:49,720 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 206 transitions, 666 flow [2022-11-16 12:16:49,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:49,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:49,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:49,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:16:49,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2139572029, now seen corresponding path program 1 times [2022-11-16 12:16:49,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088712435] [2022-11-16 12:16:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:49,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:50,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:50,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088712435] [2022-11-16 12:16:50,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088712435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:50,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:50,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013798467] [2022-11-16 12:16:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:50,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 195 [2022-11-16 12:16:50,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 206 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:50,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:50,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 195 [2022-11-16 12:16:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:51,506 INFO L130 PetriNetUnfolder]: 1084/2667 cut-off events. [2022-11-16 12:16:51,506 INFO L131 PetriNetUnfolder]: For 10874/10936 co-relation queries the response was YES. [2022-11-16 12:16:51,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 2667 events. 1084/2667 cut-off events. For 10874/10936 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19335 event pairs, 218 based on Foata normal form. 47/2686 useless extension candidates. Maximal degree in co-relation 7852. Up to 732 conditions per place. [2022-11-16 12:16:51,538 INFO L137 encePairwiseOnDemand]: 176/195 looper letters, 74 selfloop transitions, 48 changer transitions 69/295 dead transitions. [2022-11-16 12:16:51,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 295 transitions, 1750 flow [2022-11-16 12:16:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:16:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1406 transitions. [2022-11-16 12:16:51,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6554778554778555 [2022-11-16 12:16:51,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1406 transitions. [2022-11-16 12:16:51,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1406 transitions. [2022-11-16 12:16:51,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:51,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1406 transitions. [2022-11-16 12:16:51,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.81818181818181) internal successors, (1406), 11 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,556 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,556 INFO L175 Difference]: Start difference. First operand has 192 places, 206 transitions, 666 flow. Second operand 11 states and 1406 transitions. [2022-11-16 12:16:51,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 295 transitions, 1750 flow [2022-11-16 12:16:51,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 295 transitions, 1750 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:16:51,582 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 979 flow [2022-11-16 12:16:51,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2022-11-16 12:16:51,584 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 29 predicate places. [2022-11-16 12:16:51,584 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 979 flow [2022-11-16 12:16:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:51,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:51,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:16:51,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -902131826, now seen corresponding path program 1 times [2022-11-16 12:16:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:51,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603819337] [2022-11-16 12:16:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:51,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603819337] [2022-11-16 12:16:51,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603819337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:51,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:51,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245437331] [2022-11-16 12:16:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:51,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 195 [2022-11-16 12:16:51,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 979 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:51,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 195 [2022-11-16 12:16:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:51,887 INFO L130 PetriNetUnfolder]: 4/168 cut-off events. [2022-11-16 12:16:51,887 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-11-16 12:16:51,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 168 events. 4/168 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 4 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 337. Up to 13 conditions per place. [2022-11-16 12:16:51,889 INFO L137 encePairwiseOnDemand]: 190/195 looper letters, 9 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2022-11-16 12:16:51,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 140 transitions, 438 flow [2022-11-16 12:16:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:16:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:16:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1022 transitions. [2022-11-16 12:16:51,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8735042735042735 [2022-11-16 12:16:51,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1022 transitions. [2022-11-16 12:16:51,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1022 transitions. [2022-11-16 12:16:51,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:51,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1022 transitions. [2022-11-16 12:16:51,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,902 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 979 flow. Second operand 6 states and 1022 transitions. [2022-11-16 12:16:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 140 transitions, 438 flow [2022-11-16 12:16:51,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 318 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-11-16 12:16:51,907 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 300 flow [2022-11-16 12:16:51,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2022-11-16 12:16:51,909 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -28 predicate places. [2022-11-16 12:16:51,909 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 300 flow [2022-11-16 12:16:51,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:51,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:51,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:51,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:16:51,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash -971686872, now seen corresponding path program 1 times [2022-11-16 12:16:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:51,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017488146] [2022-11-16 12:16:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:53,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017488146] [2022-11-16 12:16:53,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017488146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:53,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:53,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:16:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376035349] [2022-11-16 12:16:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:53,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:16:53,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:53,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:16:53,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:16:53,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:16:53,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 300 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:53,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:53,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:16:53,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:55,281 INFO L130 PetriNetUnfolder]: 140/655 cut-off events. [2022-11-16 12:16:55,281 INFO L131 PetriNetUnfolder]: For 60/116 co-relation queries the response was YES. [2022-11-16 12:16:55,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 655 events. 140/655 cut-off events. For 60/116 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3348 event pairs, 2 based on Foata normal form. 9/650 useless extension candidates. Maximal degree in co-relation 1088. Up to 84 conditions per place. [2022-11-16 12:16:55,288 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 99 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2022-11-16 12:16:55,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 229 transitions, 759 flow [2022-11-16 12:16:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:16:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:16:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2145 transitions. [2022-11-16 12:16:55,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-11-16 12:16:55,295 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2145 transitions. [2022-11-16 12:16:55,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2145 transitions. [2022-11-16 12:16:55,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:55,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2145 transitions. [2022-11-16 12:16:55,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.0) internal successors, (2145), 13 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:55,310 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:55,311 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 300 flow. Second operand 13 states and 2145 transitions. [2022-11-16 12:16:55,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 229 transitions, 759 flow [2022-11-16 12:16:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 229 transitions, 752 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:16:55,319 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 376 flow [2022-11-16 12:16:55,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=376, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-16 12:16:55,322 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -15 predicate places. [2022-11-16 12:16:55,323 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 376 flow [2022-11-16 12:16:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:55,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:55,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:16:55,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:16:55,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:55,326 INFO L85 PathProgramCache]: Analyzing trace with hash -239241560, now seen corresponding path program 2 times [2022-11-16 12:16:55,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:55,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661355644] [2022-11-16 12:16:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:58,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661355644] [2022-11-16 12:16:58,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661355644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:58,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:58,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:16:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4088053] [2022-11-16 12:16:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:58,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:16:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:16:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:16:58,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-16 12:16:58,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 376 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:58,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:58,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-16 12:16:58,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:12,869 INFO L130 PetriNetUnfolder]: 1471/3064 cut-off events. [2022-11-16 12:17:12,870 INFO L131 PetriNetUnfolder]: For 1329/1339 co-relation queries the response was YES. [2022-11-16 12:17:12,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3064 events. 1471/3064 cut-off events. For 1329/1339 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19435 event pairs, 39 based on Foata normal form. 10/3035 useless extension candidates. Maximal degree in co-relation 7259. Up to 426 conditions per place. [2022-11-16 12:17:12,896 INFO L137 encePairwiseOnDemand]: 163/195 looper letters, 307 selfloop transitions, 119 changer transitions 0/491 dead transitions. [2022-11-16 12:17:12,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 491 transitions, 2259 flow [2022-11-16 12:17:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-16 12:17:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-16 12:17:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5558 transitions. [2022-11-16 12:17:12,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4914235190097259 [2022-11-16 12:17:12,910 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5558 transitions. [2022-11-16 12:17:12,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5558 transitions. [2022-11-16 12:17:12,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:12,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5558 transitions. [2022-11-16 12:17:12,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 95.82758620689656) internal successors, (5558), 58 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:12,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:12,948 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 195.0) internal successors, (11505), 59 states have internal predecessors, (11505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:12,949 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 376 flow. Second operand 58 states and 5558 transitions. [2022-11-16 12:17:12,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 491 transitions, 2259 flow [2022-11-16 12:17:12,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 491 transitions, 2212 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:17:12,961 INFO L231 Difference]: Finished difference. Result has 233 places, 245 transitions, 1058 flow [2022-11-16 12:17:12,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1058, PETRI_PLACES=233, PETRI_TRANSITIONS=245} [2022-11-16 12:17:12,963 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 52 predicate places. [2022-11-16 12:17:12,963 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 245 transitions, 1058 flow [2022-11-16 12:17:12,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:12,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:12,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:17:12,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1449337986, now seen corresponding path program 3 times [2022-11-16 12:17:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:12,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001454523] [2022-11-16 12:17:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:15,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001454523] [2022-11-16 12:17:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001454523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:15,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:15,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 12:17:15,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348547410] [2022-11-16 12:17:15,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:17:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:17:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:17:15,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2022-11-16 12:17:15,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 245 transitions, 1058 flow. Second operand has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:15,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:15,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2022-11-16 12:17:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:28,250 INFO L130 PetriNetUnfolder]: 1758/3797 cut-off events. [2022-11-16 12:17:28,251 INFO L131 PetriNetUnfolder]: For 6786/6786 co-relation queries the response was YES. [2022-11-16 12:17:28,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10878 conditions, 3797 events. 1758/3797 cut-off events. For 6786/6786 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 25666 event pairs, 225 based on Foata normal form. 1/3736 useless extension candidates. Maximal degree in co-relation 10850. Up to 726 conditions per place. [2022-11-16 12:17:28,364 INFO L137 encePairwiseOnDemand]: 165/195 looper letters, 318 selfloop transitions, 141 changer transitions 0/524 dead transitions. [2022-11-16 12:17:28,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 524 transitions, 3351 flow [2022-11-16 12:17:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 12:17:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-16 12:17:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5283 transitions. [2022-11-16 12:17:28,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49258741258741257 [2022-11-16 12:17:28,402 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5283 transitions. [2022-11-16 12:17:28,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5283 transitions. [2022-11-16 12:17:28,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:28,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5283 transitions. [2022-11-16 12:17:28,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 96.05454545454545) internal successors, (5283), 55 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:28,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:28,463 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:28,463 INFO L175 Difference]: Start difference. First operand has 233 places, 245 transitions, 1058 flow. Second operand 55 states and 5283 transitions. [2022-11-16 12:17:28,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 524 transitions, 3351 flow [2022-11-16 12:17:28,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 524 transitions, 3139 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-16 12:17:28,533 INFO L231 Difference]: Finished difference. Result has 298 places, 290 transitions, 1742 flow [2022-11-16 12:17:28,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1742, PETRI_PLACES=298, PETRI_TRANSITIONS=290} [2022-11-16 12:17:28,534 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 117 predicate places. [2022-11-16 12:17:28,535 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 290 transitions, 1742 flow [2022-11-16 12:17:28,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.83333333333333) internal successors, (2204), 24 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:28,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:28,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:17:28,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1184087724, now seen corresponding path program 4 times [2022-11-16 12:17:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184266072] [2022-11-16 12:17:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184266072] [2022-11-16 12:17:30,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184266072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:30,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:30,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:17:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887989080] [2022-11-16 12:17:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:17:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:17:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:17:30,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-16 12:17:30,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 290 transitions, 1742 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:30,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:30,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-16 12:17:30,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:33,770 INFO L130 PetriNetUnfolder]: 1288/3330 cut-off events. [2022-11-16 12:17:33,771 INFO L131 PetriNetUnfolder]: For 8352/8361 co-relation queries the response was YES. [2022-11-16 12:17:33,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9726 conditions, 3330 events. 1288/3330 cut-off events. For 8352/8361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 24976 event pairs, 127 based on Foata normal form. 6/3263 useless extension candidates. Maximal degree in co-relation 9676. Up to 953 conditions per place. [2022-11-16 12:17:33,814 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 197 selfloop transitions, 78 changer transitions 0/416 dead transitions. [2022-11-16 12:17:33,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 416 transitions, 2905 flow [2022-11-16 12:17:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:17:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:17:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-16 12:17:33,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-16 12:17:33,821 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-16 12:17:33,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-16 12:17:33,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:33,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-16 12:17:33,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:33,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:33,837 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:33,837 INFO L175 Difference]: Start difference. First operand has 298 places, 290 transitions, 1742 flow. Second operand 22 states and 2284 transitions. [2022-11-16 12:17:33,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 416 transitions, 2905 flow [2022-11-16 12:17:33,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 416 transitions, 2711 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-16 12:17:33,912 INFO L231 Difference]: Finished difference. Result has 303 places, 321 transitions, 2097 flow [2022-11-16 12:17:33,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2097, PETRI_PLACES=303, PETRI_TRANSITIONS=321} [2022-11-16 12:17:33,914 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 122 predicate places. [2022-11-16 12:17:33,915 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 321 transitions, 2097 flow [2022-11-16 12:17:33,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:33,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:33,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:33,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:17:33,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:33,917 INFO L85 PathProgramCache]: Analyzing trace with hash 367794626, now seen corresponding path program 5 times [2022-11-16 12:17:33,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45836247] [2022-11-16 12:17:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:36,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45836247] [2022-11-16 12:17:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45836247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:36,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:17:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531681410] [2022-11-16 12:17:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:17:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:17:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:17:36,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-16 12:17:36,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 321 transitions, 2097 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:36,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:36,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-16 12:17:36,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:38,904 INFO L130 PetriNetUnfolder]: 1529/4090 cut-off events. [2022-11-16 12:17:38,904 INFO L131 PetriNetUnfolder]: For 12203/12255 co-relation queries the response was YES. [2022-11-16 12:17:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12311 conditions, 4090 events. 1529/4090 cut-off events. For 12203/12255 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 32442 event pairs, 534 based on Foata normal form. 20/4009 useless extension candidates. Maximal degree in co-relation 12250. Up to 1650 conditions per place. [2022-11-16 12:17:38,963 INFO L137 encePairwiseOnDemand]: 170/195 looper letters, 227 selfloop transitions, 84 changer transitions 0/452 dead transitions. [2022-11-16 12:17:38,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 452 transitions, 3440 flow [2022-11-16 12:17:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:17:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:17:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2167 transitions. [2022-11-16 12:17:38,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291819291819292 [2022-11-16 12:17:38,969 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2167 transitions. [2022-11-16 12:17:38,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2167 transitions. [2022-11-16 12:17:38,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:38,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2167 transitions. [2022-11-16 12:17:38,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.19047619047619) internal successors, (2167), 21 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:38,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:38,983 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 195.0) internal successors, (4290), 22 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:38,983 INFO L175 Difference]: Start difference. First operand has 303 places, 321 transitions, 2097 flow. Second operand 21 states and 2167 transitions. [2022-11-16 12:17:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 452 transitions, 3440 flow [2022-11-16 12:17:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 452 transitions, 3313 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-11-16 12:17:39,082 INFO L231 Difference]: Finished difference. Result has 326 places, 357 transitions, 2585 flow [2022-11-16 12:17:39,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2585, PETRI_PLACES=326, PETRI_TRANSITIONS=357} [2022-11-16 12:17:39,085 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 145 predicate places. [2022-11-16 12:17:39,085 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 357 transitions, 2585 flow [2022-11-16 12:17:39,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:39,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:39,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:39,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:17:39,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash -742991826, now seen corresponding path program 6 times [2022-11-16 12:17:39,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:39,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998133088] [2022-11-16 12:17:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:39,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:40,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998133088] [2022-11-16 12:17:40,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998133088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:40,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:40,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:17:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106807952] [2022-11-16 12:17:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:17:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:17:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:17:40,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:17:40,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 357 transitions, 2585 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:40,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:40,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:17:40,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:42,217 INFO L130 PetriNetUnfolder]: 750/2586 cut-off events. [2022-11-16 12:17:42,217 INFO L131 PetriNetUnfolder]: For 14153/14682 co-relation queries the response was YES. [2022-11-16 12:17:42,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8852 conditions, 2586 events. 750/2586 cut-off events. For 14153/14682 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20156 event pairs, 154 based on Foata normal form. 46/2562 useless extension candidates. Maximal degree in co-relation 8780. Up to 530 conditions per place. [2022-11-16 12:17:42,258 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 168 selfloop transitions, 94 changer transitions 0/437 dead transitions. [2022-11-16 12:17:42,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 437 transitions, 3586 flow [2022-11-16 12:17:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:17:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:17:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2140 transitions. [2022-11-16 12:17:42,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441814595660749 [2022-11-16 12:17:42,264 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2140 transitions. [2022-11-16 12:17:42,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2140 transitions. [2022-11-16 12:17:42,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:42,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2140 transitions. [2022-11-16 12:17:42,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.6153846153846) internal successors, (2140), 13 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:42,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:42,275 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:42,275 INFO L175 Difference]: Start difference. First operand has 326 places, 357 transitions, 2585 flow. Second operand 13 states and 2140 transitions. [2022-11-16 12:17:42,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 437 transitions, 3586 flow [2022-11-16 12:17:42,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 437 transitions, 3466 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-11-16 12:17:42,385 INFO L231 Difference]: Finished difference. Result has 338 places, 376 transitions, 2860 flow [2022-11-16 12:17:42,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2860, PETRI_PLACES=338, PETRI_TRANSITIONS=376} [2022-11-16 12:17:42,387 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 157 predicate places. [2022-11-16 12:17:42,387 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 376 transitions, 2860 flow [2022-11-16 12:17:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:42,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:42,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:42,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:17:42,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -134836952, now seen corresponding path program 7 times [2022-11-16 12:17:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:42,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363595217] [2022-11-16 12:17:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:42,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:44,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363595217] [2022-11-16 12:17:44,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363595217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:44,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:44,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:17:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501638423] [2022-11-16 12:17:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:44,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:17:44,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:17:44,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:17:44,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-16 12:17:44,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 376 transitions, 2860 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:44,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:44,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-16 12:17:44,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:47,476 INFO L130 PetriNetUnfolder]: 1911/4925 cut-off events. [2022-11-16 12:17:47,476 INFO L131 PetriNetUnfolder]: For 21785/21842 co-relation queries the response was YES. [2022-11-16 12:17:47,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17079 conditions, 4925 events. 1911/4925 cut-off events. For 21785/21842 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 40211 event pairs, 285 based on Foata normal form. 18/4844 useless extension candidates. Maximal degree in co-relation 17001. Up to 1399 conditions per place. [2022-11-16 12:17:47,540 INFO L137 encePairwiseOnDemand]: 169/195 looper letters, 261 selfloop transitions, 101 changer transitions 0/509 dead transitions. [2022-11-16 12:17:47,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 509 transitions, 4427 flow [2022-11-16 12:17:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:17:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:17:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-16 12:17:47,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-16 12:17:47,546 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-16 12:17:47,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-16 12:17:47,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:47,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-16 12:17:47,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:47,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:47,559 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:47,560 INFO L175 Difference]: Start difference. First operand has 338 places, 376 transitions, 2860 flow. Second operand 22 states and 2284 transitions. [2022-11-16 12:17:47,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 509 transitions, 4427 flow [2022-11-16 12:17:47,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 509 transitions, 4289 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-16 12:17:47,757 INFO L231 Difference]: Finished difference. Result has 365 places, 414 transitions, 3552 flow [2022-11-16 12:17:47,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3552, PETRI_PLACES=365, PETRI_TRANSITIONS=414} [2022-11-16 12:17:47,761 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 184 predicate places. [2022-11-16 12:17:47,761 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 414 transitions, 3552 flow [2022-11-16 12:17:47,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:47,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:47,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:47,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:17:47,762 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash 947451330, now seen corresponding path program 8 times [2022-11-16 12:17:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745461787] [2022-11-16 12:17:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:49,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:49,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745461787] [2022-11-16 12:17:49,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745461787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:49,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:49,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-16 12:17:49,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131841079] [2022-11-16 12:17:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:49,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:17:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:17:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:17:49,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 195 [2022-11-16 12:17:49,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 414 transitions, 3552 flow. Second operand has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:49,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:49,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 195 [2022-11-16 12:17:49,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:54,039 INFO L130 PetriNetUnfolder]: 2543/7606 cut-off events. [2022-11-16 12:17:54,039 INFO L131 PetriNetUnfolder]: For 51892/52531 co-relation queries the response was YES. [2022-11-16 12:17:54,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26853 conditions, 7606 events. 2543/7606 cut-off events. For 51892/52531 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 73372 event pairs, 556 based on Foata normal form. 67/7420 useless extension candidates. Maximal degree in co-relation 26764. Up to 1078 conditions per place. [2022-11-16 12:17:54,148 INFO L137 encePairwiseOnDemand]: 167/195 looper letters, 308 selfloop transitions, 190 changer transitions 0/656 dead transitions. [2022-11-16 12:17:54,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 656 transitions, 7103 flow [2022-11-16 12:17:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:17:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:17:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2284 transitions. [2022-11-16 12:17:54,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324009324009324 [2022-11-16 12:17:54,154 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2284 transitions. [2022-11-16 12:17:54,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2284 transitions. [2022-11-16 12:17:54,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:54,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2284 transitions. [2022-11-16 12:17:54,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 103.81818181818181) internal successors, (2284), 22 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:54,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:54,169 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 195.0) internal successors, (4485), 23 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:54,169 INFO L175 Difference]: Start difference. First operand has 365 places, 414 transitions, 3552 flow. Second operand 22 states and 2284 transitions. [2022-11-16 12:17:54,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 656 transitions, 7103 flow [2022-11-16 12:17:54,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 656 transitions, 6846 flow, removed 108 selfloop flow, removed 6 redundant places. [2022-11-16 12:17:54,512 INFO L231 Difference]: Finished difference. Result has 388 places, 501 transitions, 5259 flow [2022-11-16 12:17:54,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5259, PETRI_PLACES=388, PETRI_TRANSITIONS=501} [2022-11-16 12:17:54,515 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 207 predicate places. [2022-11-16 12:17:54,515 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 501 transitions, 5259 flow [2022-11-16 12:17:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.21052631578948) internal successors, (1885), 19 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:54,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:54,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:17:54,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 116277022, now seen corresponding path program 9 times [2022-11-16 12:17:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:54,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582649184] [2022-11-16 12:17:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:55,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:55,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582649184] [2022-11-16 12:17:55,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582649184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:55,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:55,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:17:55,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906484334] [2022-11-16 12:17:55,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:55,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:17:55,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:17:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:17:55,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:17:55,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 501 transitions, 5259 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:55,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:17:55,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:17:55,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:17:59,456 INFO L130 PetriNetUnfolder]: 1606/6657 cut-off events. [2022-11-16 12:17:59,456 INFO L131 PetriNetUnfolder]: For 68341/73614 co-relation queries the response was YES. [2022-11-16 12:17:59,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 6657 events. 1606/6657 cut-off events. For 68341/73614 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 69418 event pairs, 629 based on Foata normal form. 84/6592 useless extension candidates. Maximal degree in co-relation 25245. Up to 1748 conditions per place. [2022-11-16 12:17:59,534 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 259 selfloop transitions, 97 changer transitions 0/629 dead transitions. [2022-11-16 12:17:59,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 629 transitions, 7032 flow [2022-11-16 12:17:59,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:17:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:17:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-16 12:17:59,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-16 12:17:59,539 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-16 12:17:59,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-16 12:17:59,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:59,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-16 12:17:59,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:59,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:59,549 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:59,549 INFO L175 Difference]: Start difference. First operand has 388 places, 501 transitions, 5259 flow. Second operand 13 states and 2151 transitions. [2022-11-16 12:17:59,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 629 transitions, 7032 flow [2022-11-16 12:17:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 629 transitions, 6717 flow, removed 87 selfloop flow, removed 9 redundant places. [2022-11-16 12:17:59,984 INFO L231 Difference]: Finished difference. Result has 397 places, 523 transitions, 5436 flow [2022-11-16 12:17:59,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5436, PETRI_PLACES=397, PETRI_TRANSITIONS=523} [2022-11-16 12:17:59,986 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 216 predicate places. [2022-11-16 12:17:59,987 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 523 transitions, 5436 flow [2022-11-16 12:17:59,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:59,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:59,988 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:59,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:17:59,988 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:17:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2047692766, now seen corresponding path program 10 times [2022-11-16 12:17:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:59,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972132115] [2022-11-16 12:17:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972132115] [2022-11-16 12:18:00,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972132115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:00,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:00,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879091820] [2022-11-16 12:18:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:00,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:00,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:00,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:00,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:00,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 523 transitions, 5436 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:00,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:00,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:00,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:05,003 INFO L130 PetriNetUnfolder]: 1824/7246 cut-off events. [2022-11-16 12:18:05,004 INFO L131 PetriNetUnfolder]: For 64465/76880 co-relation queries the response was YES. [2022-11-16 12:18:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28784 conditions, 7246 events. 1824/7246 cut-off events. For 64465/76880 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 76184 event pairs, 628 based on Foata normal form. 100/7162 useless extension candidates. Maximal degree in co-relation 28679. Up to 1748 conditions per place. [2022-11-16 12:18:05,120 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 263 selfloop transitions, 105 changer transitions 0/641 dead transitions. [2022-11-16 12:18:05,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 641 transitions, 7218 flow [2022-11-16 12:18:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2150 transitions. [2022-11-16 12:18:05,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8481262327416174 [2022-11-16 12:18:05,127 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2150 transitions. [2022-11-16 12:18:05,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2150 transitions. [2022-11-16 12:18:05,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:05,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2150 transitions. [2022-11-16 12:18:05,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.3846153846154) internal successors, (2150), 13 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:05,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:05,140 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:05,141 INFO L175 Difference]: Start difference. First operand has 397 places, 523 transitions, 5436 flow. Second operand 13 states and 2150 transitions. [2022-11-16 12:18:05,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 641 transitions, 7218 flow [2022-11-16 12:18:05,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 641 transitions, 7048 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-16 12:18:05,612 INFO L231 Difference]: Finished difference. Result has 410 places, 543 transitions, 5834 flow [2022-11-16 12:18:05,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5834, PETRI_PLACES=410, PETRI_TRANSITIONS=543} [2022-11-16 12:18:05,614 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 229 predicate places. [2022-11-16 12:18:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 543 transitions, 5834 flow [2022-11-16 12:18:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:05,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:05,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:18:05,616 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1779055120, now seen corresponding path program 11 times [2022-11-16 12:18:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:05,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145563943] [2022-11-16 12:18:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145563943] [2022-11-16 12:18:06,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145563943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:06,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:06,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999458566] [2022-11-16 12:18:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:06,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:06,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 543 transitions, 5834 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:06,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:06,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:06,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:10,474 INFO L130 PetriNetUnfolder]: 1682/6870 cut-off events. [2022-11-16 12:18:10,474 INFO L131 PetriNetUnfolder]: For 66179/77010 co-relation queries the response was YES. [2022-11-16 12:18:10,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28148 conditions, 6870 events. 1682/6870 cut-off events. For 66179/77010 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 72071 event pairs, 616 based on Foata normal form. 107/6808 useless extension candidates. Maximal degree in co-relation 28037. Up to 1748 conditions per place. [2022-11-16 12:18:10,556 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 276 selfloop transitions, 104 changer transitions 0/653 dead transitions. [2022-11-16 12:18:10,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 653 transitions, 7637 flow [2022-11-16 12:18:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-16 12:18:10,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-16 12:18:10,561 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-16 12:18:10,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-16 12:18:10,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:10,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-16 12:18:10,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:10,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:10,573 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:10,574 INFO L175 Difference]: Start difference. First operand has 410 places, 543 transitions, 5834 flow. Second operand 13 states and 2151 transitions. [2022-11-16 12:18:10,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 653 transitions, 7637 flow [2022-11-16 12:18:10,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 653 transitions, 7433 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-11-16 12:18:11,004 INFO L231 Difference]: Finished difference. Result has 421 places, 558 transitions, 6163 flow [2022-11-16 12:18:11,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6163, PETRI_PLACES=421, PETRI_TRANSITIONS=558} [2022-11-16 12:18:11,005 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 240 predicate places. [2022-11-16 12:18:11,005 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 558 transitions, 6163 flow [2022-11-16 12:18:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:11,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:11,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:18:11,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 180859202, now seen corresponding path program 12 times [2022-11-16 12:18:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:11,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070590633] [2022-11-16 12:18:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:12,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:12,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070590633] [2022-11-16 12:18:12,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070590633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:12,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:12,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165652323] [2022-11-16 12:18:12,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:12,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:12,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:12,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 558 transitions, 6163 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:12,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:12,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:15,901 INFO L130 PetriNetUnfolder]: 1663/6969 cut-off events. [2022-11-16 12:18:15,902 INFO L131 PetriNetUnfolder]: For 72321/84888 co-relation queries the response was YES. [2022-11-16 12:18:15,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 6969 events. 1663/6969 cut-off events. For 72321/84888 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 73781 event pairs, 529 based on Foata normal form. 98/6905 useless extension candidates. Maximal degree in co-relation 28800. Up to 1748 conditions per place. [2022-11-16 12:18:15,988 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 236 selfloop transitions, 144 changer transitions 0/653 dead transitions. [2022-11-16 12:18:15,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 653 transitions, 7752 flow [2022-11-16 12:18:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-16 12:18:15,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485207100591716 [2022-11-16 12:18:15,995 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-16 12:18:15,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-16 12:18:15,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:15,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-16 12:18:16,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:16,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:16,006 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:16,006 INFO L175 Difference]: Start difference. First operand has 421 places, 558 transitions, 6163 flow. Second operand 13 states and 2151 transitions. [2022-11-16 12:18:16,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 653 transitions, 7752 flow [2022-11-16 12:18:16,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 653 transitions, 7498 flow, removed 49 selfloop flow, removed 7 redundant places. [2022-11-16 12:18:16,455 INFO L231 Difference]: Finished difference. Result has 430 places, 571 transitions, 6556 flow [2022-11-16 12:18:16,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6556, PETRI_PLACES=430, PETRI_TRANSITIONS=571} [2022-11-16 12:18:16,456 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 249 predicate places. [2022-11-16 12:18:16,456 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 571 transitions, 6556 flow [2022-11-16 12:18:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:16,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:16,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:18:16,457 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1483633024, now seen corresponding path program 13 times [2022-11-16 12:18:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:16,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923291646] [2022-11-16 12:18:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923291646] [2022-11-16 12:18:17,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923291646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:17,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:17,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507141098] [2022-11-16 12:18:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:17,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:17,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:17,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:17,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:17,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 571 transitions, 6556 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:17,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:17,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:17,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:21,076 INFO L130 PetriNetUnfolder]: 1481/6116 cut-off events. [2022-11-16 12:18:21,076 INFO L131 PetriNetUnfolder]: For 70322/81452 co-relation queries the response was YES. [2022-11-16 12:18:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26659 conditions, 6116 events. 1481/6116 cut-off events. For 70322/81452 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 62304 event pairs, 536 based on Foata normal form. 78/6037 useless extension candidates. Maximal degree in co-relation 26539. Up to 1748 conditions per place. [2022-11-16 12:18:21,190 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 244 selfloop transitions, 123 changer transitions 0/640 dead transitions. [2022-11-16 12:18:21,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 640 transitions, 7870 flow [2022-11-16 12:18:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2144 transitions. [2022-11-16 12:18:21,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8457593688362919 [2022-11-16 12:18:21,194 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2144 transitions. [2022-11-16 12:18:21,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2144 transitions. [2022-11-16 12:18:21,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:21,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2144 transitions. [2022-11-16 12:18:21,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.92307692307693) internal successors, (2144), 13 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:21,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:21,204 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:21,204 INFO L175 Difference]: Start difference. First operand has 430 places, 571 transitions, 6556 flow. Second operand 13 states and 2144 transitions. [2022-11-16 12:18:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 640 transitions, 7870 flow [2022-11-16 12:18:21,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 640 transitions, 7598 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-16 12:18:21,833 INFO L231 Difference]: Finished difference. Result has 437 places, 577 transitions, 6734 flow [2022-11-16 12:18:21,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6264, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6734, PETRI_PLACES=437, PETRI_TRANSITIONS=577} [2022-11-16 12:18:21,834 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 256 predicate places. [2022-11-16 12:18:21,834 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 577 transitions, 6734 flow [2022-11-16 12:18:21,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:21,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:21,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:18:21,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1912337188, now seen corresponding path program 14 times [2022-11-16 12:18:21,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:21,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390305786] [2022-11-16 12:18:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:21,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:23,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:23,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390305786] [2022-11-16 12:18:23,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390305786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:23,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:23,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:18:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147680332] [2022-11-16 12:18:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:18:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:18:23,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:18:23,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-16 12:18:23,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 577 transitions, 6734 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:23,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:23,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-16 12:18:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:28,825 INFO L130 PetriNetUnfolder]: 2608/10175 cut-off events. [2022-11-16 12:18:28,825 INFO L131 PetriNetUnfolder]: For 157481/223580 co-relation queries the response was YES. [2022-11-16 12:18:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42963 conditions, 10175 events. 2608/10175 cut-off events. For 157481/223580 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 116072 event pairs, 1140 based on Foata normal form. 263/10159 useless extension candidates. Maximal degree in co-relation 42840. Up to 2059 conditions per place. [2022-11-16 12:18:29,066 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 480 selfloop transitions, 117 changer transitions 0/827 dead transitions. [2022-11-16 12:18:29,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 827 transitions, 11356 flow [2022-11-16 12:18:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:18:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:18:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2649 transitions. [2022-11-16 12:18:29,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7990950226244344 [2022-11-16 12:18:29,073 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2649 transitions. [2022-11-16 12:18:29,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2649 transitions. [2022-11-16 12:18:29,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:29,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2649 transitions. [2022-11-16 12:18:29,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 155.8235294117647) internal successors, (2649), 17 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:29,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:29,296 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 195.0) internal successors, (3510), 18 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:29,296 INFO L175 Difference]: Start difference. First operand has 437 places, 577 transitions, 6734 flow. Second operand 17 states and 2649 transitions. [2022-11-16 12:18:29,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 827 transitions, 11356 flow [2022-11-16 12:18:30,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 827 transitions, 11086 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-11-16 12:18:30,031 INFO L231 Difference]: Finished difference. Result has 451 places, 625 transitions, 7418 flow [2022-11-16 12:18:30,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6486, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7418, PETRI_PLACES=451, PETRI_TRANSITIONS=625} [2022-11-16 12:18:30,032 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 270 predicate places. [2022-11-16 12:18:30,033 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 625 transitions, 7418 flow [2022-11-16 12:18:30,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:30,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:30,033 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:30,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:18:30,034 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:30,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1083972018, now seen corresponding path program 15 times [2022-11-16 12:18:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120734514] [2022-11-16 12:18:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:30,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120734514] [2022-11-16 12:18:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120734514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:30,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:30,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740446901] [2022-11-16 12:18:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:30,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:30,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 625 transitions, 7418 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:30,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:30,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:30,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:37,301 INFO L130 PetriNetUnfolder]: 2858/11898 cut-off events. [2022-11-16 12:18:37,301 INFO L131 PetriNetUnfolder]: For 115262/139586 co-relation queries the response was YES. [2022-11-16 12:18:37,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50092 conditions, 11898 events. 2858/11898 cut-off events. For 115262/139586 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 140752 event pairs, 1222 based on Foata normal form. 117/11700 useless extension candidates. Maximal degree in co-relation 49962. Up to 1890 conditions per place. [2022-11-16 12:18:37,587 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 431 selfloop transitions, 94 changer transitions 0/813 dead transitions. [2022-11-16 12:18:37,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 813 transitions, 10300 flow [2022-11-16 12:18:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2167 transitions. [2022-11-16 12:18:37,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548323471400394 [2022-11-16 12:18:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2167 transitions. [2022-11-16 12:18:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2167 transitions. [2022-11-16 12:18:37,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:37,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2167 transitions. [2022-11-16 12:18:37,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.69230769230768) internal successors, (2167), 13 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:37,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:37,836 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:37,836 INFO L175 Difference]: Start difference. First operand has 451 places, 625 transitions, 7418 flow. Second operand 13 states and 2167 transitions. [2022-11-16 12:18:37,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 813 transitions, 10300 flow [2022-11-16 12:18:38,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 813 transitions, 10104 flow, removed 51 selfloop flow, removed 5 redundant places. [2022-11-16 12:18:38,743 INFO L231 Difference]: Finished difference. Result has 464 places, 645 transitions, 7803 flow [2022-11-16 12:18:38,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7803, PETRI_PLACES=464, PETRI_TRANSITIONS=645} [2022-11-16 12:18:38,744 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 283 predicate places. [2022-11-16 12:18:38,744 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 645 transitions, 7803 flow [2022-11-16 12:18:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:38,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:38,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:38,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:18:38,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1543815610, now seen corresponding path program 16 times [2022-11-16 12:18:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:38,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940476415] [2022-11-16 12:18:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:39,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940476415] [2022-11-16 12:18:39,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940476415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:39,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:39,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619832475] [2022-11-16 12:18:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:39,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:39,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 645 transitions, 7803 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:39,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:39,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:39,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:46,162 INFO L130 PetriNetUnfolder]: 2929/12002 cut-off events. [2022-11-16 12:18:46,162 INFO L131 PetriNetUnfolder]: For 125334/151459 co-relation queries the response was YES. [2022-11-16 12:18:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52243 conditions, 12002 events. 2929/12002 cut-off events. For 125334/151459 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 141616 event pairs, 1177 based on Foata normal form. 116/11799 useless extension candidates. Maximal degree in co-relation 52107. Up to 2861 conditions per place. [2022-11-16 12:18:46,496 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 429 selfloop transitions, 99 changer transitions 0/816 dead transitions. [2022-11-16 12:18:46,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 816 transitions, 10672 flow [2022-11-16 12:18:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:18:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:18:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2022-11-16 12:18:46,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2022-11-16 12:18:46,501 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2022-11-16 12:18:46,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2022-11-16 12:18:46,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:46,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2022-11-16 12:18:46,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:46,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:46,517 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:46,518 INFO L175 Difference]: Start difference. First operand has 464 places, 645 transitions, 7803 flow. Second operand 13 states and 2158 transitions. [2022-11-16 12:18:46,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 816 transitions, 10672 flow [2022-11-16 12:18:47,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 816 transitions, 10455 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-16 12:18:47,865 INFO L231 Difference]: Finished difference. Result has 476 places, 667 transitions, 8235 flow [2022-11-16 12:18:47,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7598, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8235, PETRI_PLACES=476, PETRI_TRANSITIONS=667} [2022-11-16 12:18:47,866 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 295 predicate places. [2022-11-16 12:18:47,866 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 667 transitions, 8235 flow [2022-11-16 12:18:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:47,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:47,867 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:18:47,867 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 244208756, now seen corresponding path program 17 times [2022-11-16 12:18:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:47,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642843454] [2022-11-16 12:18:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:49,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:49,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642843454] [2022-11-16 12:18:49,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642843454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:49,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:49,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:18:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357588405] [2022-11-16 12:18:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:49,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:18:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:18:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:18:49,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 195 [2022-11-16 12:18:49,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 667 transitions, 8235 flow. Second operand has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:49,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:49,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 195 [2022-11-16 12:18:49,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:56,809 INFO L130 PetriNetUnfolder]: 3204/12437 cut-off events. [2022-11-16 12:18:56,809 INFO L131 PetriNetUnfolder]: For 217364/359708 co-relation queries the response was YES. [2022-11-16 12:18:57,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57204 conditions, 12437 events. 3204/12437 cut-off events. For 217364/359708 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 147601 event pairs, 1581 based on Foata normal form. 281/12357 useless extension candidates. Maximal degree in co-relation 57062. Up to 2059 conditions per place. [2022-11-16 12:18:57,149 INFO L137 encePairwiseOnDemand]: 179/195 looper letters, 555 selfloop transitions, 127 changer transitions 0/912 dead transitions. [2022-11-16 12:18:57,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 912 transitions, 13288 flow [2022-11-16 12:18:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:18:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:18:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2807 transitions. [2022-11-16 12:18:57,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997150997150997 [2022-11-16 12:18:57,155 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2807 transitions. [2022-11-16 12:18:57,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2807 transitions. [2022-11-16 12:18:57,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:57,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2807 transitions. [2022-11-16 12:18:57,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 155.94444444444446) internal successors, (2807), 18 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:57,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:57,170 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 195.0) internal successors, (3705), 19 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:57,170 INFO L175 Difference]: Start difference. First operand has 476 places, 667 transitions, 8235 flow. Second operand 18 states and 2807 transitions. [2022-11-16 12:18:57,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 912 transitions, 13288 flow [2022-11-16 12:18:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 912 transitions, 13057 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-16 12:18:58,761 INFO L231 Difference]: Finished difference. Result has 493 places, 686 transitions, 8676 flow [2022-11-16 12:18:58,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8676, PETRI_PLACES=493, PETRI_TRANSITIONS=686} [2022-11-16 12:18:58,762 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 312 predicate places. [2022-11-16 12:18:58,762 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 686 transitions, 8676 flow [2022-11-16 12:18:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.33333333333334) internal successors, (2240), 15 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:58,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:58,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:18:58,763 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-16 12:18:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash -777575870, now seen corresponding path program 18 times [2022-11-16 12:18:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:58,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854036104] [2022-11-16 12:18:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:59,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854036104] [2022-11-16 12:18:59,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854036104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:59,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:59,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:18:59,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948976262] [2022-11-16 12:18:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:59,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:18:59,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:18:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:18:59,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 195 [2022-11-16 12:18:59,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 686 transitions, 8676 flow. Second operand has 13 states, 13 states have (on average 158.07692307692307) internal successors, (2055), 13 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:59,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:59,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 195 [2022-11-16 12:18:59,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand